DNA

Question 1

Where is DNA located in
cells?

Answer 1

Found in the nucleus of cells

Question 2

How is DNA organised in the
nucleus?

Answer 2

Stored as chromosomes

Question 3

How many chromosomes does a
human body cells have pairs

Answer 3

Humans have 46 chromosomes in 23 pairs

Question 4

Chromosomes…

Answer 4

are arranged in pairs

Question 5

What is a gene?

Answer 5

Length of DNA

Question 6

Genes contain a code that
regulates the production of…

Answer 6

the proteins that are made in the body

Question 7

What type of molecule is DNA?

Answer 7

DNA is a polymer

Question 8

What shape is DNA?

Answer 8

Double-helix

Question 9

Each gene codes for a sequence
of…

Answer 9

Amino acids

Question 10

What is a polymer?

Answer 10

A large molecule made of many small repeating units joined together.

Question 11

How many strands does DNA have?

Answer 11

Two

Question 12

What is a genome?

Answer 12

The complete set of DNA of
an organism

Question 13

What has understanding the genome helped to do?

Answer 13

• Identify genes linked with different diseases
• Understand and treat inherited disorders
• Understand human migration and evolution

Question 14

DNA is found in the nucleus of eukaryotic cells.
Describe the
structure of DNA.

Answer 14

• Double-stranded/ 2 strands
• Twist to form a double helix
• Polymer